java中的JDBC用户管理系统_Java+JDBC学生信息管理系统
base包下：
package base;
import java.sql.ResultSet;
import java.sql.SQLException;
import dao.AdminDAO;
import dao.StudentDAO;
import util.DBUtil;
import temp.DAO;
public abstract class BaseDAO {
protected final DBUtil db = DBUtil.getDBUtil();
protected ResultSet rs;
private static BaseDAO baseDAO;
public BaseDAO() {
init();
}
private void init() {
// buildAbilityDAO();
}
// protected abstract void buildAbilityDAO();
public static synchronized BaseDAO getAbilityDAO(DAO dao) {
switch (dao) {
case AdminDAO:
if (baseDAO == null || baseDAO.getClass() != AdminDAO.class) {
baseDAO = AdminDAO.getInstance();
}
break;
case StudentDAO:
if (baseDAO == null || baseDAO.getClass() != StudentDAO.class) {
baseDAO = StudentDAO.getInstance();
}
break;
default:
break;
}
return baseDAO;
}
protected void destroy() {
try {
if (rs != null) {
rs.close();
}
} catch (SQLException se) {
se.printStackTrace();
} finally {
db.close();
}
}
}
dao包下：
package dao;
import java.sql.SQLException;
import base.BaseDAO;
/**
* 管理員增刪查改
* @author Administrator
*
*/
public class AdminDAO extends BaseDAO{
private static AdminDAO ad = null;
public static synchronized AdminDAO getInstance() {
if (ad == null) {
ad = new AdminDAO();
}
return ad;
}
public boolean queryForLogin(String username, String password) {
boolean result = false;
if (username.length() == 0 || password.length() == 0) {
return result;
}
String sql = "select * from admin where username=? and password=?";
String[] param = { username, password };
rs = db.executeQuery(sql, param);
try {
if (rs.next()) {
result = true;
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
destroy();
}
return result;
}
}
package dao;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import model.Student;
import base.BaseDAO;
public class StudentDAO extends BaseDAO{
private final int fieldNum = 9;
private final int showNum = 15;
private static StudentDAO sd = null;
public static synchronized StudentDAO getInstance() {
if (sd == null) {
sd = new StudentDAO();
}
return sd;
}
// update
public boolean update(Student stu) {
boolean result = false;
if (stu == null) {
return result;
}
try {
// check
if (queryBySno(stu.getSno()) == 0) {
return result;
}
// update
String sql = "update student set sex=?,department=?,email=?,tel=?,hometown=?,mark=? where name=? and sno=?";
String[] param = { stu.getSex(), stu.getDepartment(), stu.getEmail(), stu.getTel(), stu.getHomeTown(),
stu.getMark(), stu.getName(), stu.getSno() };
int rowCount = db.executeUpdate(sql, param);
if (rowCount == 1) {
result = true;
}
} catch (SQLException se) {
se.printStackTrace();
} finally {
destroy();
}
return result;
}
// delete
public boolean delete(Student stu) {
boolean result = false;
if (stu == null) {
return result;
}
String sql = "delete from student where name=? and sno=?";
String[] param = { stu.getName(), stu.getSno() };
int rowCount = db.executeUpdate(sql, param);
if (rowCount == 1) {
result = true;
}
destroy();
return result;
}
// add
public boolean add(Student stu) {
boolean result = false;
if (stu == null) {
return result;
}
try {
// check
if (queryBySno(stu.getSno()) == 1) {
return result;
}
// insert
String sql = "insert into student(name,sno,sex,department,hometown,mark,email,tel) values(?,?,?,?,?,?,?,?)";
String[] param = { stu.getName(), stu.getSno(), stu.getSex(), stu.getDepartment(), stu.getHomeTown(),
stu.getMark(), stu.getEmail(), stu.getTel() };
if (db.executeUpdate(sql, param) == 1) {
result = true;
}
} catch (SQLException se) {
se.printStackTrace();
} finally {
destroy();
}
return result;
}
// query by name
public String[][] queryByName(String name) {
String[][] result = null;
if (name.length() < 0) {
return result;
}
List stus = new ArrayList();
int i = 0;
String sql = "select * from student where name like ?";
String[] param = { "%" + name + "%" };
rs = db.executeQuery(sql, param);
try {
while (rs.next()) {
buildList(rs, stus, i);
i++;
}
if (stus.size() > 0) {
result = new String[stus.size()][fieldNum];
for (int j = 0; j < stus.size(); j++) {
buildResult(result, stus, j);
}
}
} catch (SQLException se) {
se.printStackTrace();
} finally {
destroy();
}
return result;
}
// query
public String[][] list(int pageNum) {
String[][] result = null;
if (pageNum < 1) {
return result;
}
List stus = new ArrayList();
int i = 0;
int beginNum = (pageNum - 1) * showNum;
String sql = "select * from student limit ?,?";
Integer[] param = { beginNum, showNum };
rs = db.executeQuery(sql, param);
try {
while (rs.next()) {
buildList(rs, stus, i);
i++;
}
if (stus.size() > 0) {
result = new String[stus.size()][fieldNum];
for (int j = 0; j < stus.size(); j++) {
buildResult(result, stus, j);
}
}
} catch (SQLException se) {
se.printStackTrace();
} finally {
destroy();
}
return result;
}
// 將rs記錄添加到list中
private void buildList(ResultSet rs, List list, int i) throws SQLException {
Student stu = new Student();
stu.setId(i + 1);
stu.setName(rs.getString("name"));
stu.setDepartment(rs.getString("department"));
stu.setEmail(rs.getString("email"));
stu.setHomeTown(rs.getString("hometown"));
stu.setMark(rs.getString("mark"));
stu.setSex(rs.getString("sex"));
stu.setSno(rs.getString("sno"));
stu.setTel(rs.getString("tel"));
list.add(stu);
}
// 將list中記錄添加到二維數組中
private void buildResult(String[][] result, List stus, int j) {
Student stu = stus.get(j);
result[j][0] = String.valueOf(stu.getId());
result[j][1] = stu.getName();
result[j][2] = stu.getSno();
result[j][3] = stu.getSex();
result[j][4] = stu.getDepartment();
result[j][5] = stu.getHomeTown();
result[j][6] = stu.getMark();
result[j][7] = stu.getEmail();
result[j][8] = stu.getTel();
}
// query by sno
private int queryBySno(String sno) throws SQLException {
int result = 0;
if ("".equals(sno) || sno == null) {
return result;
}
String checkSql = "select * from student where sno=?";
String[] checkParam = { sno };
rs = db.executeQuery(checkSql, checkParam);
if (rs.next()) {
result = 1;
}
return result;
}
}
model包下：
package model;
public class Admin {
private int id;
private String name;
private String username;
private String password;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
package model;
public class Student {
private int id;
private String sno;//學號
private String name;
private String sex;
private String department;//院系
private String homeTown;//籍貫
private String mark;
private String email;
private String tel;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getSno() {
return sno;
}
public void setSno(String sno) {
this.sno = sno;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getDepartment() {
return department;
}
public void setDepartment(String department) {
this.department = department;
}
public String getHomeTown() {
return homeTown;
}
public void setHomeTown(String homeTown) {
this.homeTown = homeTown;
}
public String getMark() {
return mark;
}
public void setMark(String mark) {
this.mark = mark;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getTel() {
return tel;
}
public void setTel(String tel) {
this.tel = tel;
}
}
run包下：
package run;
import view.LoginView;
public class Main {
public static void main(String[] args) {
// TODO 自動生成的方法存根
new LoginView();
}
}
temp包下：
package temp;
/**
* 常量
* @author Administrator
*
*/
public class AppConstants {
//jdbc
public static final String JDBC_URL = "jdbc:mysql://127.0.0.1:3306/student?useUnicode=true&characterEncodeing=UTF-8";
public static final String JDBC_USERNAME = "root";
public static final String JDBC_PASSWORD = "123456";
public static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
// student field
public static final String STUDENT_NAME = "姓名";
public static final String STUDENT_SNO = "學號";
public static final String STUDENT_SEX = "性別";
public static final String STUDENT_DEPARTMETN = "院系";
public static final String STUDENT_HOMETOWN = "籍貫";
public static final String STUDENT_EMAIL = "電子郵件";
public static final String STUDENT_TEL = "聯系方式";
public static final String STUDENT_MARK = "學分";
// login view
public static final String LOGIN_TITLE = "登錄界面";
public static final String LOGIN_USERNAME = "用戶名";
public static final String LOGIN_PASSWORD = "密碼";
public static final String LOGIN = "登錄";
public static final String RESET = "重置";
// main view
public static final String MAINVIEW_TITLE = "學生信息管理系統";
public static final String MAINVIEW_PAGENUM_JLABEL_DI = "第 ";
public static final String MAINVIEW_PAGENUM_JLABEL_YE = "/99 頁";
public static final String MAINVIEW_FIND_JLABEL = "查詢結果";
public static final String MAINVIEW_FIRST = "首頁";
public static final String MAINVIEW_LAST = "末頁";
public static final String MAINVIEW_PRE = "上一頁";
public static final String MAINVIEW_NEXT = "下一頁";
public static final String PARAM_FIND_CONDITION = "";
public static final String PARAM_FIND = "查找";
public static final String PARAM_ADD = "添加";
public static final String PARAM_DELETE = "刪除";
public static final String PARAM_UPDATE = "更新";
// add view
public static final String ADDVIEW_TITLE = "添加學生信息";
public static final String ADDVIEW_ADDBUTTON = "添加";
public static final String EXITBUTTON = "退出";
// delete view
public static final String DELETEVIEW_TITLE = "刪除學生信息";
public static final String DELETEVIEW_DELETEBUTTON = "刪除";
// update view
public static final String UPDATEVIEW_TITLE = "更新學生信息";
public static final String UPDATEVIEW_UPDATEBUTTON = "更新";
}
package temp;
/**
* 定制枚舉類型
* @author Administrator
*
*/
public enum DAO {
AdminDAO,StudentDAO;
}
util包下：
package util;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import temp.AppConstants;
public class DBUtil {
private static DBUtil db;
private Connection conn;
private PreparedStatement ps;
private ResultSet rs;
private DBUtil() {
}
public static DBUtil getDBUtil() {
if (db == null) {
db = new DBUtil();
}
return db;
}
public int executeUpdate(String sql) {
int result = -1;
if (getConn() == null) {
return result;
}
try {
ps = conn.prepareStatement(sql);
result = ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
return result;
}
public int executeUpdate(String sql, Object[] obj) {
int result = -1;
if (getConn() == null) {
return result;
}
try {
ps = conn.prepareStatement(sql);
for (int i = 0; i < obj.length; i++) {
ps.setObject(i + 1, obj[i]);
}
result = ps.executeUpdate();
close();
} catch (SQLException e) {
e.printStackTrace();
}
return result;
}
public ResultSet executeQuery(String sql) {
if (getConn() == null) {
return null;
}
try {
ps = conn.prepareStatement(sql);
rs = ps.executeQuery();
} catch (SQLException e) {
e.printStackTrace();
}
return rs;
}
public ResultSet executeQuery(String sql, Object[] obj) {
if (getConn() == null) {
return null;
}
try {
ps = conn.prepareStatement(sql);
for (int i = 0; i < obj.length; i++) {
ps.setObject(i + 1, obj[i]);
}
rs = ps.executeQuery();
} catch (SQLException e) {
e.printStackTrace();
}
return rs;
}
private Connection getConn() {
try {
if (conn == null || conn.isClosed()) {
Class.forName(AppConstants.JDBC_DRIVER);
conn = DriverManager.getConnection(AppConstants.JDBC_URL, AppConstants.JDBC_USERNAME,
temp.AppConstants.JDBC_PASSWORD);
}
} catch (ClassNotFoundException e) {
System.out.println("jdbc driver is not found.");
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return conn;
}
public void close() {
try {
if (rs != null) {
rs.close();
}
if (ps != null) {
ps.close();
}
if (conn != null) {
conn.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
view包下：
package view;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import base.BaseDAO;
import dao.StudentDAO;
import model.Student;
import temp.AppConstants;
import temp.DAO;
/**
* 添加學生
* @author Administrator
*
*/
public class AddView extends JFrame{
private static final long serialVersionUID = 2411072805644479176L;
private JPanel jPanelCenter, jPanelSouth;
private JButton addButton, exitButton;
private JTextField name, sno, department, hometown, mark, email, tel, sex;
public AddView() {
init();
}
private void init() {
setTitle(AppConstants.ADDVIEW_TITLE);
// center panel
jPanelCenter = new JPanel();
jPanelCenter.setLayout(new GridLayout(9, 2));
jPanelCenter.add(new JLabel(AppConstants.STUDENT_NAME));
name = new JTextField();
jPanelCenter.add(name);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_SNO));
sno = new JTextField();
jPanelCenter.add(sno);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_SEX));
sex = new JTextField();
jPanelCenter.add(sex);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_DEPARTMETN));
department = new JTextField();
jPanelCenter.add(department);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_HOMETOWN));
hometown = new JTextField();
jPanelCenter.add(hometown);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_MARK));
mark = new JTextField();
jPanelCenter.add(mark);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_EMAIL));
email = new JTextField();
jPanelCenter.add(email);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_TEL));
tel = new JTextField();
jPanelCenter.add(tel);
jPanelCenter.add(new JLabel("-------------------------------------------------"));
jPanelCenter.add(new JLabel("-------------------------------------------------"));
// south panel
jPanelSouth = new JPanel();
jPanelSouth.setLayout(new GridLayout(1, 2));
addButton = new JButton(AppConstants.ADDVIEW_ADDBUTTON);
addButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (check()) {
Student stu = new Student();
buildStudent(stu);
boolean isSuccess = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).add(stu);
if (isSuccess) {
setEmpty();
if (MainView.currPageNum < 0 || MainView.currPageNum > 99) {
MainView.currPageNum = 1;
}
String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO))
.list(MainView.currPageNum);
MainView.initJTable(MainView.jTable, result);
}
}
}
});
jPanelSouth.add(addButton);
exitButton = new JButton(AppConstants.EXITBUTTON);
exitButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
}
});
jPanelSouth.add(exitButton);
this.add(jPanelCenter, BorderLayout.CENTER);
this.add(jPanelSouth, BorderLayout.SOUTH);
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
setBounds(470, 200, 400, 270);
setResizable(false);
setVisible(true);
}
private boolean check() {
boolean result = false;
if ("".equals(name.getText()) || "".equals(sno.getText()) || "".equals(department.getText())
|| "".equals(sex.getText()) || "".equals(mark.getText()) || "".equals(tel.getText())
|| "".equals(email.getText()) || "".equals(hometown.getText())) {
return result;
} else {
result = true;
}
return result;
}
private void buildStudent(Student stu) {
stu.setDepartment(department.getText());
stu.setEmail(email.getText());
stu.setHomeTown(hometown.getText());
stu.setMark(mark.getText());
stu.setName(name.getText());
stu.setSno(sno.getText());
stu.setTel(tel.getText());
stu.setSex(sex.getText());
}
private void setEmpty() {
name.setText("");
sno.setText("");
department.setText("");
sex.setText("");
email.setText("");
hometown.setText("");
tel.setText("");
mark.setText("");
}
}
package view;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import base.BaseDAO;
import model.Student;
import dao.StudentDAO;
import temp.AppConstants;
import temp.DAO;
/**
* 刪除學生
* @author Administrator
*
*/
public class DeleteView extends JFrame{
/**
* 添加已生成的串行版本標識
*/
private static final long serialVersionUID = 501541272051379470L;
private JPanel jPanelCenter, jPanelSouth;
private JButton deleteButton, exitButton;
private JTextField name, sno; // 根據姓名+學號刪除學生
public DeleteView() {
init();
}
private void init() {
setTitle(AppConstants.DELETEVIEW_TITLE);
// center panel
jPanelCenter = new JPanel();
jPanelCenter.setLayout(new GridLayout(3, 2));
jPanelCenter.add(new JLabel(AppConstants.STUDENT_NAME));
name = new JTextField();
jPanelCenter.add(name);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_SNO));
sno = new JTextField();
jPanelCenter.add(sno);
jPanelCenter.add(new JLabel("-------------------------------------------------"));
jPanelCenter.add(new JLabel("-------------------------------------------------"));
// south panel
jPanelSouth = new JPanel();
jPanelSouth.setLayout(new GridLayout(1, 2));
deleteButton = new JButton(AppConstants.DELETEVIEW_DELETEBUTTON);
deleteButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (check()) {
Student stu = new Student();
buildStudent(stu);
boolean isSuccess = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).delete(stu);
if (isSuccess) {
setEmpty();
if (MainView.currPageNum < 0 || MainView.currPageNum > 99) {
MainView.currPageNum = 1;
}
String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO))
.list(MainView.currPageNum);
MainView.initJTable(MainView.jTable, result);
}
}
}
});
jPanelSouth.add(deleteButton);
exitButton = new JButton(AppConstants.EXITBUTTON);
exitButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
}
});
jPanelSouth.add(exitButton);
this.add(jPanelCenter, BorderLayout.CENTER);
this.add(jPanelSouth, BorderLayout.SOUTH);
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
setBounds(470, 250, 400, 130);
setResizable(false);
setVisible(true);
}
private boolean check() {
boolean result = false;
if ("".equals(name.getText()) || "".equals(sno.getText())) {
return result;
} else {
result = true;
}
return result;
}
private void buildStudent(Student stu) {
stu.setName(name.getText());
stu.setSno(sno.getText());
}
private void setEmpty() {
name.setText("");
sno.setText("");
}
}
package view;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import base.BaseDAO;
import dao.AdminDAO;
import temp.AppConstants;
import temp.DAO;
/**
* 登錄界面
* @author Administrator
*
*/
public class LoginView extends JFrame{
private static final long serialVersionUID = -4972101784603327025L;
private JPanel jPanelCenter, jPanelSouth;
private JTextField username;
private JPasswordField password;
private JButton loginButton, resetButton;
public LoginView() {
init();
}
private void init() {
this.setTitle("Login");
jPanelCenter = new JPanel();
jPanelCenter.setLayout(new GridLayout(3, 2));
jPanelCenter.add(new JLabel(AppConstants.LOGIN_USERNAME));
username = new JTextField();
jPanelCenter.add(username);
jPanelCenter.add(new JLabel(AppConstants.LOGIN_PASSWORD));
password = new JPasswordField();
// enter key listener
password.addKeyListener(new LoginListener());
jPanelCenter.add(password);
jPanelCenter.add(new JLabel("----------------------------------------------"));
jPanelCenter.add(new JLabel("----------------------------------------------"));
jPanelSouth = new JPanel();
jPanelSouth.setLayout(new GridLayout(1, 2));
loginButton = new JButton(AppConstants.LOGIN);
loginButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
check();
}
});
jPanelSouth.add(loginButton);
resetButton = new JButton(AppConstants.RESET);
resetButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
username.setText("");
password.setText("");
}
});
jPanelSouth.add(resetButton);
this.add(jPanelCenter, BorderLayout.CENTER);
this.add(jPanelSouth, BorderLayout.SOUTH);
this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
this.setBounds(450, 250, 375, 140);
this.setResizable(false);
this.setVisible(true);
}
private class LoginListener extends KeyAdapter {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
check();
}
}
}
private void check() {
AdminDAO adminDAO = (AdminDAO) BaseDAO.getAbilityDAO(DAO.AdminDAO);
if (adminDAO.queryForLogin(username.getText(), String.valueOf(password.getPassword()))) {
dispose();
new MainView();
} else {
username.setText("");
password.setText("");
}
}
}
package view;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
import dao.StudentDAO;
import base.BaseDAO;
import temp.AppConstants;
import temp.DAO;
/**
* 首頁
* @author Administrator
*
*/
public class MainView extends JFrame{
/**
* 添加已生成的串行版本標識
*/
private static final long serialVersionUID = 6313156717813295316L;
private final int maxPageNum = 99;
private JPanel jPanelNorth, jPanelSouth, jPanelCenter;
private JButton jButtonFirst, jButtonLast, jButtonNext, jButtonPre, jButtonAdd, jButtonDelete, jButtonUpdate,
jButtonFind;
private JLabel currPageNumJLabel;
private JTextField condition;
public static JTable jTable;
private JScrollPane jScrollPane;
private DefaultTableModel myTableModel;
public static String[] column = { "id", AppConstants.STUDENT_NAME, AppConstants.STUDENT_SNO,
AppConstants.STUDENT_SEX, AppConstants.STUDENT_DEPARTMETN, AppConstants.STUDENT_HOMETOWN,
AppConstants.STUDENT_MARK, AppConstants.STUDENT_EMAIL, AppConstants.STUDENT_TEL };
public static int currPageNum = 1;
public MainView() {
init();
}
private void init() {
setTitle(AppConstants.MAINVIEW_TITLE);
// north panel
jPanelNorth = new JPanel();
jPanelNorth.setLayout(new GridLayout(1, 5));
condition = new JTextField(AppConstants.PARAM_FIND_CONDITION);
condition.addKeyListener(new FindListener());
jPanelNorth.add(condition);
// query by name
jButtonFind = new JButton(AppConstants.PARAM_FIND);
jButtonFind.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
find();
}
});
jButtonFind.addKeyListener(new FindListener());
// add
jPanelNorth.add(jButtonFind);
jButtonAdd = new JButton(AppConstants.PARAM_ADD);
jButtonAdd.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new AddView();
}
});
jPanelNorth.add(jButtonAdd);
// delete
jButtonDelete = new JButton(AppConstants.PARAM_DELETE);
jButtonDelete.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new DeleteView();
}
});
jPanelNorth.add(jButtonDelete);
// update
jButtonUpdate = new JButton(AppConstants.PARAM_UPDATE);
jButtonUpdate.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new UpdateView();
}
});
jPanelNorth.add(jButtonUpdate);
// center panel
jPanelCenter = new JPanel();
jPanelCenter.setLayout(new GridLayout(1, 1));
// init jTable
String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);
myTableModel = new DefaultTableModel(result, column);
jTable = new JTable(myTableModel);
DefaultTableCellRenderer cr = new DefaultTableCellRenderer();
cr.setHorizontalAlignment(JLabel.CENTER);
jTable.setDefaultRenderer(Object.class, cr);
initJTable(jTable, result);
jScrollPane = new JScrollPane(jTable);
jPanelCenter.add(jScrollPane);
// south panel
jPanelSouth = new JPanel();
jPanelSouth.setLayout(new GridLayout(1, 5));
jButtonFirst = new JButton(AppConstants.MAINVIEW_FIRST);
jButtonFirst.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
currPageNum = 1;
String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);
initJTable(jTable, result);
currPageNumJLabel.setText(AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum
+ AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);
}
});
jButtonPre = new JButton(AppConstants.MAINVIEW_PRE);
jButtonPre.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
currPageNum--;
if (currPageNum <= 0) {
currPageNum = 1;
}
String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);
initJTable(jTable, result);
currPageNumJLabel.setText(AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum
+ AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);
}
});
jButtonNext = new JButton(AppConstants.MAINVIEW_NEXT);
jButtonNext.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
currPageNum++;
if (currPageNum > maxPageNum) {
currPageNum = maxPageNum;
}
String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);
initJTable(jTable, result);
currPageNumJLabel.setText(AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum
+ AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);
}
});
jButtonLast = new JButton(AppConstants.MAINVIEW_LAST);
jButtonLast.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
currPageNum = maxPageNum;
String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);
initJTable(jTable, result);
currPageNumJLabel.setText(AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum
+ AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);
}
});
currPageNumJLabel = new JLabel(
AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum + AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);
currPageNumJLabel.setHorizontalAlignment(JLabel.CENTER);
jPanelSouth.add(jButtonFirst);
jPanelSouth.add(jButtonPre);
jPanelSouth.add(currPageNumJLabel);
jPanelSouth.add(jButtonNext);
jPanelSouth.add(jButtonLast);
this.add(jPanelNorth, BorderLayout.NORTH);
this.add(jPanelCenter, BorderLayout.CENTER);
this.add(jPanelSouth, BorderLayout.SOUTH);
setBounds(400, 200, 750, 340);
setResizable(false);
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
setVisible(true);
}
public static void initJTable(JTable jTable, String[][] result) {
((DefaultTableModel) jTable.getModel()).setDataVector(result, column);
jTable.setRowHeight(20);
TableColumn firsetColumn = jTable.getColumnModel().getColumn(0);
firsetColumn.setPreferredWidth(30);
firsetColumn.setMaxWidth(30);
firsetColumn.setMinWidth(30);
TableColumn secondColumn = jTable.getColumnModel().getColumn(1);
secondColumn.setPreferredWidth(60);
secondColumn.setMaxWidth(60);
secondColumn.setMinWidth(60);
TableColumn thirdColumn = jTable.getColumnModel().getColumn(2);
thirdColumn.setPreferredWidth(90);
thirdColumn.setMaxWidth(90);
thirdColumn.setMinWidth(90);
TableColumn fourthColumn = jTable.getColumnModel().getColumn(3);
fourthColumn.setPreferredWidth(30);
fourthColumn.setMaxWidth(30);
fourthColumn.setMinWidth(30);
TableColumn seventhColumn = jTable.getColumnModel().getColumn(6);
seventhColumn.setPreferredWidth(30);
seventhColumn.setMaxWidth(30);
seventhColumn.setMinWidth(30);
TableColumn ninthColumn = jTable.getColumnModel().getColumn(8);
ninthColumn.setPreferredWidth(90);
ninthColumn.setMaxWidth(90);
ninthColumn.setMinWidth(90);
}
private class FindListener extends KeyAdapter {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
find();
}
}
}
private void find() {
currPageNum = 0;
String param = condition.getText();
if ("".equals(param) || param == null) {
initJTable(MainView.jTable, null);
currPageNumJLabel.setText(AppConstants.MAINVIEW_FIND_JLABEL);
return;
}
String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).queryByName(param);
condition.setText("");
initJTable(MainView.jTable, result);
currPageNumJLabel.setText(AppConstants.MAINVIEW_FIND_JLABEL);
}
}
package view;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import base.BaseDAO;
import dao.StudentDAO;
import model.Student;
import temp.AppConstants;
import temp.DAO;
/**
* 更新學生信息
* @author Administrator
*
*/
public class UpdateView extends JFrame{
/**
* 添加已生成的串行版本標識
*/
private static final long serialVersionUID = -1259286514124919662L;
private JPanel jPanelCenter, jPanelSouth;
private JButton updateButton, exitButton;
private JTextField name, sno, department, hometown, mark, email, tel, sex;
public UpdateView() {
init();
}
private void init() {
setTitle(AppConstants.UPDATEVIEW_TITLE);
// center panel
jPanelCenter = new JPanel();
jPanelCenter.setLayout(new GridLayout(9, 2));
jPanelCenter.add(new JLabel(AppConstants.STUDENT_NAME));
name = new JTextField();
jPanelCenter.add(name);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_SNO));
sno = new JTextField();
jPanelCenter.add(sno);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_SEX));
sex = new JTextField();
jPanelCenter.add(sex);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_DEPARTMETN));
department = new JTextField();
jPanelCenter.add(department);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_HOMETOWN));
hometown = new JTextField();
jPanelCenter.add(hometown);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_MARK));
mark = new JTextField();
jPanelCenter.add(mark);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_EMAIL));
email = new JTextField();
jPanelCenter.add(email);
jPanelCenter.add(new JLabel(AppConstants.STUDENT_TEL));
tel = new JTextField();
jPanelCenter.add(tel);
jPanelCenter.add(new JLabel("-------------------------------------------------"));
jPanelCenter.add(new JLabel("-------------------------------------------------"));
// south panel
jPanelSouth = new JPanel();
jPanelSouth.setLayout(new GridLayout(1, 2));
updateButton = new JButton(AppConstants.UPDATEVIEW_UPDATEBUTTON);
updateButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (check()) {
Student stu = new Student();
buildStudent(stu);
boolean isSuccess = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).update(stu);
if (isSuccess) {
setEmpty();
if (MainView.currPageNum < 0 || MainView.currPageNum > 99) {
MainView.currPageNum = 1;
}
String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO))
.list(MainView.currPageNum);
MainView.initJTable(MainView.jTable, result);
}
}
}
});
jPanelSouth.add(updateButton);
exitButton = new JButton(AppConstants.EXITBUTTON);
exitButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
}
});
jPanelSouth.add(exitButton);
this.add(jPanelCenter, BorderLayout.CENTER);
this.add(jPanelSouth, BorderLayout.SOUTH);
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
setBounds(470, 200, 400, 270);
setResizable(false);
setVisible(true);
}
private boolean check() {
boolean result = false;
if ("".equals(name.getText()) || "".equals(sno.getText()) || "".equals(department.getText())
|| "".equals(sex.getText()) || "".equals(mark.getText()) || "".equals(tel.getText())
|| "".equals(email.getText()) || "".equals(hometown.getText())) {
return result;
} else {
result = true;
}
return result;
}
private void buildStudent(Student stu) {
stu.setDepartment(department.getText());
stu.setEmail(email.getText());
stu.setHomeTown(hometown.getText());
stu.setMark(mark.getText());
stu.setName(name.getText());
stu.setSno(sno.getText());
stu.setTel(tel.getText());
stu.setSex(sex.getText());
}
private void setEmpty() {
name.setText("");
sno.setText("");
department.setText("");
sex.setText("");
email.setText("");
hometown.setText("");
tel.setText("");
mark.setText("");
}
}
總結
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